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. 2020 Sep 25;15:7079–7096. doi: 10.2147/IJN.S250001

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© 2020 Badrigilan et al.

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(A) Mechanism of the pH-induced disassembly of hollow (BiO)₂CO₃ nanotubes (BNTs). (B) Transmission electron microscopy (TEM) images of BNTs dispersed in a phosphate buffer saline (PBS) solution (pH 5.5) at different time points. (C) TEM images of BNTs in urine collected from a mouse after 3 h. Reprinted with permission from Hu X, Sun J, Li F, et al. Renal-clearable hollow bismuth subcarbonate nanotubes for tumor targeted computed tomography imaging and chemoradiotherapy. Nano Lett. 2018;18(2):1196–1204.⁸¹ Copyright 2018, American Chemical Society.